<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar class="page-nav-bar" title="登录">
      <van-icon name="cross" class="van-icon" slot="left" @click="$router.back()"/>
    </van-nav-bar>
    
    <!-- 登录表单 -->
    <van-form @submit="onSubmit" ref="loginForm">
      <van-field
        name="mobile"
        v-model="user.mobile"
        placeholder="请输入手机号"
        type="number"
        maxlength="11"
        :rules="userFormRules.mobile"
      >
        <i slot="left-icon" class="toutiao toutiao-shouji"></i>
      </van-field>
      <van-field
        name="code"
        v-model="user.code"
        placeholder="请输入验证码"
        type="number"
        maxlength="6"
        :rules="userFormRules.code"
      >
        <i slot="left-icon" class="toutiao toutiao-yanzhengma"></i>
        <template #button>
          <van-count-down
            :time="1000 * 60"
            format="ss s"
            v-if="isCountDownShow"
            @finish="isCountDownShow=false"
          />
          <van-button
            v-else
            class="send-sms-btn"
            size="small"
            type="primary"
            native-type="button"
            @click="onSendSms"
          >发送验证码</van-button>
        </template>
      </van-field>
      <div class="login-btn-wrap" style="margin: 16px;">
        <van-button class="login-btn" block type="info" native-type="submit">登录</van-button>
      </div>
    </van-form>
  </div>
</template>
  
<script>
import { login, sendSms } from "@/api/user.js";
export default {
  name: "Login",
  data() {
    return {
      user: {
        mobile: "",
        code: ""
      },
      userFormRules: {
        mobile: [
          {
            required: true,
            message: "手机号不能为空"
          },
          {
            pattern: /^1[3|5|7|8]\d{9}$/,
            message: "手机号格式错误"
          }
        ],
        code: [
          {
            required: true,
            message: "验证码不能为空"
          },
          {
            pattern: /^\d{6}$/,
            message: "验证码格式错误"
          }
        ]
      },
      isCountDownShow: false
    };
  },
  methods: {
    // 表单提交事件
    async onSubmit(values) {
      // 获取到用户输入的手机号码和验证码
      // 发送请求：准备能够请求的接口方法
      const user = this.user;
      // 发送请求：引入得到的发送请求的接口方法
      // 发送请求 ： 调用login方法实现登录操作
      this.$toast.loading({
        message: "登录中...",
        forbidClick: true,
        duration: 0
      })
      try {
        const res = await login(user);
        // console.log(res);
        this.$toast.success("登陆成功");
        this.$store.commit('setUser',res.data.data)
        if(this.$route.query.backpage){
          this.$route.push(this.$route.query.backpage)
        }else{
          this.$router.back()
        }
      } catch (err) {
        // console.log(err);
        if (err.respones && err.respones.status === 400) {
          this.$toast.fail("手机号或验证码错误");
        } else {
          this.$toast.fail("登陆失败,请稍后重试");
        }
      }
    },
    async onSendSms() {
      try {
        await this.$refs.loginForm.validate("mobile");
      } catch (err) {
        return console.log(err);
      }
      this.isCountDownShow = true;
      try {
        await sendSms(this.user.mobile);
        this.$toast("发送成功");
      } catch (err) {
        this.isCountDownShow = false;
        if (err.respones && err.respones.status === 429) {
          this.$toast("发送太频繁了,请稍后重试");
        } else {
          this.$toast("放送失败，请稍后重试");
        }
      }
    }
  }
};
</script>
  
  <style lang="less" scoped>
.login-container {
  .toutiao {
    font-size: 37px;
  }
  .send-sms-btn {
    // width: 152px;
    height: 46px;
    line-height: 46px;
    background-color: #ededed;
    font-size: 22px;
    color: #666;
  }
  .login-btn-wrap {
    padding: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
      border: none;
    }
  }
}

/deep/ .van-button--primary {
  border-color: #1989fa !important;
}
</style>